Home / 21,195.37-29,243.23-12,239.61

Finding the Fourth Proportional to 21,195.37, 29,243.23 and 12,239.61

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Solution

The fourth proportional to 21,195.37, 29,243.23 and 12,239.61 is: 16,886.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,195.37 : 29,243.23 = 12,239.61 : x
  2. Step 2: Convert to fraction form
    21,195.37/29,243.23 = 12,239.61/x
  3. Step 3: Cross multiply
    21,195.37x = 29,243.23 × 12,239.61
  4. Step 4: Simplify right side
    21,195.37x = 357,925,590.08
  5. Step 5: Solve for x
    x = 357,925,590.08/21,195.37
  6. Step 6: Final answer
    x = 16,886.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.